06-21-2006
Subtracting date / timestamps
I have looked through the forums and found many date / time manipulation tools, but cannot seem to find something that fits my needs for the following.
I have a log file with date time stamps like this:
Jun 21 17:21:52
Jun 21 17:24:56
Jun 21 17:27:59
Jun 21 17:31:03
Jun 21 17:34:07
Jun 21 17:37:10
Jun 21 17:40:14
Jun 21 17:43:18
I need something that "subtracts" the time from the previous entry and
displays the "minutes:seconds" difference.
These should all be around 3 minutes apart, and I am looking for descrepencies.
Any hints on how to do this would be greatly appreciated.
Thanks.,..
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LEARN ABOUT CENTOS
sttime
sttime(3) ShapeTools Toolkit Library sttime(3)
NAME
stMktime, stWriteTime - date and time handling
SYNOPSIS
#include <config.h>
#include <sttk.h.h>
time_tstMktime (char *string);
char*stWriteTime (time_t date);
DESCRIPTION
stMktime scans the given string and tries to read a date and time from it. It understands various formats of date strings. The following is
a list of all valid formats, optional parts in brackets.
[Tue] Jan 5[,] [19]93
This includes the standard asctime(3) format.
Jan 5 With no year given, the year defaults to the current year.
[19]93/01/05 This notation requires month and day represented by exactly two digits.
5.1.[19]93 This is the usual German notation.
5.1. German notation referencing the current year.
A certain time, given together with the date must always have the following form.
hours:minutes[:seconds]
Each of the fields must be an integer value within the proper range (hours: 0-23, minutes and seconds: 0-59). Values below
10 may be written as one digit numbers.
The time value may be placed anywhere in the date string: at the beginning, at the end, or somewhere in the middle. Any amount of white-
space may be given between a field of the time value and the separating colon. The time is always considered to be local time.
stWriteTime generates a time string similar to asctime(3) from its date argument.
SEE ALSO
asctime(3)
BUGS
Time Zone Names within the time string (like `MET') are not handled properly. In most cases they will cause a failure.
sttk-1.7 Thu Jun 24 17:43:35 1993 sttime(3)